Against

It's only a matter of time before (a) someone actually comes up with an affordable model that combines two 9.5-mm 2.5-inch drives in one single enclosure – Seagate already has one but it costs nearly three times more than a 2TB 2.5-inch model, and (b) 4TB 2.5inch drives appear on the market.

Until then, if you want to store very large amounts of data cheaply locally without having to use a Network Attached Storage (NAS) or a server, we'll have to stick to external 3.5-inch hard disk drives.

Details of the drive from the back

Those with the cheapest terabyte for hard-earned cash are 4TB models at the moment, with certain ones offering a Terabyte for less than £25 (about $40, AU$45).

Design

As expected, this 3.5-inch external hard drive is big (129 x 42 x 167mm or 5.08 x 1.65 x 6.57inch) and heavy at just over 1Kg. It requires a 24W external power adaptor which means that you have to be near a mains power supply to use it.

Physically, it is a rectangular-shaped device that is designed to stand up or sit flat, and you should be able to stack a couple in the later position should the need to do so arises.

You do however get the NTI Backup Now EZ 3 for free, a goodie worth $40 (about £25, AU$ 46) and with it the ability to backup files offsite as well as granular restoring capabilities.

Performance

PC Mark 8 rating: 2928

Crystal Benchmark Reads: 173.7Mbps/223.23 IOPS

Crystal Benchmark Writes: 183.4Mbps/447.23 IOPS

The Toshiba 4TB Canvio drive compensates its bulkiness by a relatively high transfer rate and rather good performance. The NTFS-formatted drive has a 7200RPM rotational speed, 32MB buffer cache and offers a stated 14ms access time.

Here's the kicker though, Toshiba doesn't do a 4TB hard disk drive for consumers and none of its enterprise hard disk drives match the stated specifications of the Canvio Desk. That could mean that Toshiba is using someone else's hard disk drive.

That belief is reinforced by the fact that both the 4TB and 5TB models sport 7200RPM spinning speeds compared to 5900RPM for the lower capacity ones.

Lot of holes/slits to allow air to circulate

To make things even more interesting, only one hard disk drive on the market, the WD RE WD4001FYYG fits the profile (4TB, 3.5-inch, 32MB, 7200RPM). Two issues though: it is a SAS drive and costs more than twice the STOR.E Canvio.

Now a faster spinning hard disk drive means two things, generally (a) it is noisier in operation (b) it consumes more power and therefore tends to be hotter when in use. Unsurprisingly, the Canvio Desk ticks both boxes and that explains to some extent why the designers added vents.

Verdict

Like its smaller sibling, this drive is fantastic value for money. It is affordable, sturdily built, fast and should you need a large capacity internal hard disk drive, well, you can always pry one open as it is cheaper – by a huge margin – compared to other internal HDDS on the market, another paradox of demand and supply. It is a bit noisy but everything is subjective.

There's two reasons though why one could hold off from buying one of those though. Firstly, the Seagate 4TB costs the same and may well be a better buy – we haven't tested it yet.

Secondly, the 3TB and 5TB models could be good alternatives depending on whether you want the cheapest price per TB on the market or the highest portable storage density in that category.

GET YOUR FREE MAGAZINENET: The Money Issue worth £5.99

Join 13,000 TechRadar Pro subscribers!

Sign up for a new, free business service from TechRadar Pro to help you in your job delivering high value, original content direct to your inbox